Quote:

Where you run into limitations is a proportionally huge port (like a Cleveland Boss 302) on a small displacement motor, it's hard to avoid a peaky (light switch) type torque and power curve with that type scenario. you effectively kill as much duration as you can to try to give it some "passable" bottom end....and (like ford) you gear the wee out of it (4.33 gears, etc).



In the hot rod article I posted, the Boss makes more torque sooner, as well as holds onto it longer, than the smaller port DZ. This seems contrary to what you're saying...?

I recently finished a set of LS3 heads going onto a 6.0 similar to yours (G8). They have virtually identical port dimensions as the Victor 440s I'll be using on my car (stock stroke 440). I haven't worked SBM stuff, but from what I've seen for BBMs, I have to think most use heads that are way too small.